diff --git a/assets/js/admin/meta-boxes-product-variation.js b/assets/js/admin/meta-boxes-product-variation.js
index 2f689c20b36..6588963e062 100644
--- a/assets/js/admin/meta-boxes-product-variation.js
+++ b/assets/js/admin/meta-boxes-product-variation.js
@@ -285,7 +285,7 @@ jQuery( function( $ ) {
 				wc_meta_boxes_product_variations_media.variable_image_frame.on( 'select', function () {
 
 					var attachment = wc_meta_boxes_product_variations_media.variable_image_frame.state().get( 'selection' ).first().toJSON(),
-						url = attachment.sizes.thumbnail ? attachment.sizes.thumbnail.url : attachment.url;
+						url = attachment.sizes && attachment.sizes.thumbnail ? attachment.sizes.thumbnail.url : attachment.url;
 
 					$( '.upload_image_id', wc_meta_boxes_product_variations_media.setting_variation_image ).val( attachment.id ).change();
 					wc_meta_boxes_product_variations_media.setting_variation_image.find( '.upload_image_button' ).addClass( 'remove' );
diff --git a/assets/js/admin/meta-boxes-product-variation.min.js b/assets/js/admin/meta-boxes-product-variation.min.js
index 98df7f20bf7..75fd28b833d 100644
--- a/assets/js/admin/meta-boxes-product-variation.min.js
+++ b/assets/js/admin/meta-boxes-product-variation.min.js
@@ -1 +1 @@
-jQuery(function(a){var b={init:function(){a("#variable_product_options").on("change","input.variable_is_downloadable",this.variable_is_downloadable).on("change","input.variable_is_virtual",this.variable_is_virtual).on("change","input.variable_manage_stock",this.variable_manage_stock).on("click","button.notice-dismiss",this.notice_dismiss).on("click","h3 .sort",this.set_menu_order).on("reload",this.reload),a("input.variable_is_downloadable, input.variable_is_virtual, input.variable_manage_stock").change(),a("#woocommerce-product-data").on("woocommerce_variations_loaded",this.variations_loaded),a(document.body).on("woocommerce_variations_added",this.variation_added)},reload:function(){d.load_variations(1)},variable_is_downloadable:function(){a(this).closest(".woocommerce_variation").find(".show_if_variation_downloadable").hide(),a(this).is(":checked")&&a(this).closest(".woocommerce_variation").find(".show_if_variation_downloadable").show()},variable_is_virtual:function(){a(this).closest(".woocommerce_variation").find(".hide_if_variation_virtual").show(),a(this).is(":checked")&&a(this).closest(".woocommerce_variation").find(".hide_if_variation_virtual").hide()},variable_manage_stock:function(){a(this).closest(".woocommerce_variation").find(".show_if_variation_manage_stock").hide(),a(this).is(":checked")&&a(this).closest(".woocommerce_variation").find(".show_if_variation_manage_stock").show()},notice_dismiss:function(){a(this).closest("div.notice").remove()},variations_loaded:function(c,d){d=d||!1;var e=a("#woocommerce-product-data");d||(a("input.variable_is_downloadable, input.variable_is_virtual, input.variable_manage_stock",e).change(),a(".woocommerce_variation",e).each(function(b,c){var d=a(c),e=a(".sale_price_dates_from",d).val(),f=a(".sale_price_dates_to",d).val();(""!==e||""!==f)&&a("a.sale_schedule",d).click()}),a(".woocommerce_variations .variation-needs-update",e).removeClass("variation-needs-update"),a("button.cancel-variation-changes, button.save-variation-changes",e).attr("disabled","disabled")),a("#tiptip_holder").removeAttr("style"),a("#tiptip_arrow").removeAttr("style"),a(".woocommerce_variations .tips, .woocommerce_variations .help_tip, .woocommerce_variations .woocommerce-help-tip",e).tipTip({attribute:"data-tip",fadeIn:50,fadeOut:50,delay:200}),a(".sale_price_dates_fields",e).each(function(){var b=a(this).find("input").datepicker({defaultDate:"",dateFormat:"yy-mm-dd",numberOfMonths:1,showButtonPanel:!0,onSelect:function(c){var d=a(this).is(".sale_price_dates_from")?"minDate":"maxDate",e=a(this).data("datepicker"),f=a.datepicker.parseDate(e.settings.dateFormat||a.datepicker._defaults.dateFormat,c,e.settings);b.not(this).datepicker("option",d,f),a(this).change()}})}),a(".woocommerce_variations",e).sortable({items:".woocommerce_variation",cursor:"move",axis:"y",handle:".sort",scrollSensitivity:40,forcePlaceholderSize:!0,helper:"clone",opacity:.65,stop:function(){b.variation_row_indexes()}}),a(document.body).trigger("wc-enhanced-select-init")},variation_added:function(a,c){1===c&&b.variations_loaded(null,!0)},set_menu_order:function(b){b.preventDefault();var c=a(this).closest(".woocommerce_variation").find(".variation_menu_order"),e=window.prompt(woocommerce_admin_meta_boxes_variations.i18n_enter_menu_order,c.val());null!=e&&(c.val(parseInt(e,10)).change(),d.save_variations())},variation_row_indexes:function(){var b=a("#variable_product_options").find(".woocommerce_variations"),c=parseInt(b.attr("data-page"),10),d=parseInt((c-1)*woocommerce_admin_meta_boxes_variations.variations_per_page,10);a(".woocommerce_variations .woocommerce_variation").each(function(b,c){a(".variation_menu_order",c).val(parseInt(a(c).index(".woocommerce_variations .woocommerce_variation"),10)+1+d).change()})}},c={variable_image_frame:null,setting_variation_image_id:null,setting_variation_image:null,wp_media_post_id:wp.media.model.settings.post.id,init:function(){a("#variable_product_options").on("click",".upload_image_button",this.add_image),a("a.add_media").on("click",this.restore_wp_media_post_id)},add_image:function(b){var d=a(this),e=d.attr("rel"),f=d.closest(".upload_image");if(c.setting_variation_image=f,c.setting_variation_image_id=e,b.preventDefault(),d.is(".remove"))a(".upload_image_id",c.setting_variation_image).val("").change(),c.setting_variation_image.find("img").eq(0).attr("src",woocommerce_admin_meta_boxes_variations.woocommerce_placeholder_img_src),c.setting_variation_image.find(".upload_image_button").removeClass("remove");else{if(c.variable_image_frame)return c.variable_image_frame.uploader.uploader.param("post_id",c.setting_variation_image_id),void c.variable_image_frame.open();wp.media.model.settings.post.id=c.setting_variation_image_id,c.variable_image_frame=wp.media.frames.variable_image=wp.media({title:woocommerce_admin_meta_boxes_variations.i18n_choose_image,button:{text:woocommerce_admin_meta_boxes_variations.i18n_set_image},states:[new wp.media.controller.Library({title:woocommerce_admin_meta_boxes_variations.i18n_choose_image,filterable:"all"})]}),c.variable_image_frame.on("select",function(){var b=c.variable_image_frame.state().get("selection").first().toJSON(),d=b.sizes.thumbnail?b.sizes.thumbnail.url:b.url;a(".upload_image_id",c.setting_variation_image).val(b.id).change(),c.setting_variation_image.find(".upload_image_button").addClass("remove"),c.setting_variation_image.find("img").eq(0).attr("src",d),wp.media.model.settings.post.id=c.wp_media_post_id}),c.variable_image_frame.open()}},restore_wp_media_post_id:function(){wp.media.model.settings.post.id=c.wp_media_post_id}},d={init:function(){a("li.variations_tab a").on("click",this.initial_load),a("#variable_product_options").on("click","button.save-variation-changes",this.save_variations).on("click","button.cancel-variation-changes",this.cancel_variations).on("click",".remove_variation",this.remove_variation),a(document.body).on("change","#variable_product_options .woocommerce_variations :input",this.input_changed).on("change",".variations-defaults select",this.defaults_changed),a("form#post").on("submit",this.save_on_submit),a(".wc-metaboxes-wrapper").on("click","a.do_variation_action",this.do_variation_action)},check_for_changes:function(){var b=a("#variable_product_options").find(".woocommerce_variations .variation-needs-update");if(0<b.length){if(!window.confirm(woocommerce_admin_meta_boxes_variations.i18n_edited_variations))return b.removeClass("variation-needs-update"),!1;d.save_changes()}return!0},block:function(){a("#woocommerce-product-data").block({message:null,overlayCSS:{background:"#fff",opacity:.6}})},unblock:function(){a("#woocommerce-product-data").unblock()},initial_load:function(){0===a("#variable_product_options").find(".woocommerce_variations .woocommerce_variation").length&&e.go_to_page()},load_variations:function(b,c){b=b||1,c=c||woocommerce_admin_meta_boxes_variations.variations_per_page;var e=a("#variable_product_options").find(".woocommerce_variations");d.block(),a.ajax({url:woocommerce_admin_meta_boxes_variations.ajax_url,data:{action:"woocommerce_load_variations",security:woocommerce_admin_meta_boxes_variations.load_variations_nonce,product_id:woocommerce_admin_meta_boxes_variations.post_id,attributes:e.data("attributes"),page:b,per_page:c},type:"POST",success:function(c){e.empty().append(c).attr("data-page",b),a("#woocommerce-product-data").trigger("woocommerce_variations_loaded"),d.unblock()}})},get_variations_fields:function(b){var c=a(":input",b).serializeJSON();return a(".variations-defaults select").each(function(b,d){var e=a(d);c[e.attr("name")]=e.val()}),c},save_changes:function(b){var c=a("#variable_product_options").find(".woocommerce_variations"),e=a(".variation-needs-update",c),f={};0<e.length&&(d.block(),f=d.get_variations_fields(e),f.action="woocommerce_save_variations",f.security=woocommerce_admin_meta_boxes_variations.save_variations_nonce,f.product_id=woocommerce_admin_meta_boxes_variations.post_id,f["product-type"]=a("#product-type").val(),a.ajax({url:woocommerce_admin_meta_boxes_variations.ajax_url,data:f,type:"POST",success:function(c){e.removeClass("variation-needs-update"),a("button.cancel-variation-changes, button.save-variation-changes").attr("disabled","disabled"),a("#woocommerce-product-data").trigger("woocommerce_variations_saved"),"function"==typeof b&&b(c),d.unblock()}}))},save_variations:function(){return a("#variable_product_options").trigger("woocommerce_variations_save_variations_button"),d.save_changes(function(b){var c=a("#variable_product_options").find(".woocommerce_variations"),d=c.attr("data-page");a("#variable_product_options").find("#woocommerce_errors").remove(),b&&c.before(b),a(".variations-defaults select").each(function(){a(this).attr("data-current",a(this).val())}),e.go_to_page(d)}),!1},save_on_submit:function(b){var c=a("#variable_product_options").find(".woocommerce_variations .variation-needs-update");0<c.length&&(b.preventDefault(),a("#variable_product_options").trigger("woocommerce_variations_save_variations_on_submit"),d.save_changes(d.save_on_submit_done))},save_on_submit_done:function(){a("form#post").submit()},cancel_variations:function(){var b=parseInt(a("#variable_product_options").find(".woocommerce_variations").attr("data-page"),10);return a("#variable_product_options").find(".woocommerce_variations .variation-needs-update").removeClass("variation-needs-update"),a(".variations-defaults select").each(function(){a(this).val(a(this).attr("data-current"))}),e.go_to_page(b),!1},add_variation:function(){d.block();var b={action:"woocommerce_add_variation",post_id:woocommerce_admin_meta_boxes_variations.post_id,loop:a(".woocommerce_variation").size(),security:woocommerce_admin_meta_boxes_variations.add_variation_nonce};return a.post(woocommerce_admin_meta_boxes_variations.ajax_url,b,function(b){var c=a(b);c.addClass("variation-needs-update"),a("#variable_product_options").find(".woocommerce_variations").prepend(c),a("button.cancel-variation-changes, button.save-variation-changes").removeAttr("disabled"),a("#variable_product_options").trigger("woocommerce_variations_added",1),d.unblock()}),!1},remove_variation:function(){if(d.check_for_changes(),window.confirm(woocommerce_admin_meta_boxes_variations.i18n_remove_variation)){var b=a(this).attr("rel"),c=[],f={action:"woocommerce_remove_variations"};d.block(),b>0?(c.push(b),f.variation_ids=c,f.security=woocommerce_admin_meta_boxes_variations.delete_variations_nonce,a.post(woocommerce_admin_meta_boxes_variations.ajax_url,f,function(){var b=a("#variable_product_options").find(".woocommerce_variations"),c=parseInt(b.attr("data-page"),10),d=Math.ceil((parseInt(b.attr("data-total"),10)-1)/woocommerce_admin_meta_boxes_variations.variations_per_page),f=1;a("#woocommerce-product-data").trigger("woocommerce_variations_removed"),c===d||d>=c?f=c:c>d&&0!==d&&(f=d),e.go_to_page(f,-1)})):d.unblock()}return!1},link_all_variations:function(){if(d.check_for_changes(),window.confirm(woocommerce_admin_meta_boxes_variations.i18n_link_all_variations)){d.block();var b={action:"woocommerce_link_all_variations",post_id:woocommerce_admin_meta_boxes_variations.post_id,security:woocommerce_admin_meta_boxes_variations.link_variation_nonce};a.post(woocommerce_admin_meta_boxes_variations.ajax_url,b,function(b){var c=parseInt(b,10);1===c?window.alert(c+" "+woocommerce_admin_meta_boxes_variations.i18n_variation_added):0===c||c>1?window.alert(c+" "+woocommerce_admin_meta_boxes_variations.i18n_variations_added):window.alert(woocommerce_admin_meta_boxes_variations.i18n_no_variations_added),c>0?(e.go_to_page(1,c),a("#variable_product_options").trigger("woocommerce_variations_added",c)):d.unblock()})}return!1},input_changed:function(){a(this).closest(".woocommerce_variation").addClass("variation-needs-update"),a("button.cancel-variation-changes, button.save-variation-changes").removeAttr("disabled"),a("#variable_product_options").trigger("woocommerce_variations_input_changed")},defaults_changed:function(){a(this).closest("#variable_product_options").find(".woocommerce_variation:first").addClass("variation-needs-update"),a("button.cancel-variation-changes, button.save-variation-changes").removeAttr("disabled"),a("#variable_product_options").trigger("woocommerce_variations_defaults_changed")},do_variation_action:function(){var b,c=a("select.variation_actions").val(),f={},g=0;switch(c){case"add_variation":return void d.add_variation();case"link_all_variations":return void d.link_all_variations();case"delete_all":window.confirm(woocommerce_admin_meta_boxes_variations.i18n_delete_all_variations)&&window.confirm(woocommerce_admin_meta_boxes_variations.i18n_last_warning)&&(f.allowed=!0,g=-1*parseInt(a("#variable_product_options").find(".woocommerce_variations").attr("data-total"),10));break;case"variable_regular_price_increase":case"variable_regular_price_decrease":case"variable_sale_price_increase":case"variable_sale_price_decrease":b=window.prompt(woocommerce_admin_meta_boxes_variations.i18n_enter_a_value_fixed_or_percent),null!=b&&(b.indexOf("%")>=0?f.value=accounting.unformat(b.replace(/\%/,""),woocommerce_admin.mon_decimal_point)+"%":f.value=accounting.unformat(b,woocommerce_admin.mon_decimal_point));break;case"variable_regular_price":case"variable_sale_price":case"variable_stock":case"variable_weight":case"variable_length":case"variable_width":case"variable_height":case"variable_download_limit":case"variable_download_expiry":b=window.prompt(woocommerce_admin_meta_boxes_variations.i18n_enter_a_value),null!=b&&(f.value=b);break;case"variable_sale_schedule":f.date_from=window.prompt(woocommerce_admin_meta_boxes_variations.i18n_scheduled_sale_start),f.date_to=window.prompt(woocommerce_admin_meta_boxes_variations.i18n_scheduled_sale_end),null===f.date_from&&(f.date_from=!1),null===f.date_to&&(f.date_to=!1);break;default:a("select.variation_actions").trigger(c),f=a("select.variation_actions").triggerHandler(c+"_ajax_data",f)}"delete_all"===c&&f.allowed?a("#variable_product_options").find(".variation-needs-update").removeClass("variation-needs-update"):d.check_for_changes(),d.block(),a.ajax({url:woocommerce_admin_meta_boxes_variations.ajax_url,data:{action:"woocommerce_bulk_edit_variations",security:woocommerce_admin_meta_boxes_variations.bulk_edit_variations_nonce,product_id:woocommerce_admin_meta_boxes_variations.post_id,bulk_action:c,data:f},type:"POST",success:function(){e.go_to_page(1,g)}})}},e={init:function(){a(document.body).on("woocommerce_variations_added",this.update_single_quantity).on("change",".variations-pagenav .page-selector",this.page_selector).on("click",".variations-pagenav .first-page",this.first_page).on("click",".variations-pagenav .prev-page",this.prev_page).on("click",".variations-pagenav .next-page",this.next_page).on("click",".variations-pagenav .last-page",this.last_page)},update_variations_count:function(b){var c=a("#variable_product_options").find(".woocommerce_variations"),d=parseInt(c.attr("data-total"),10)+b,e=a(".variations-pagenav .displaying-num");return c.attr("data-total",d),1===d?e.text(woocommerce_admin_meta_boxes_variations.i18n_variation_count_single.replace("%qty%",d)):e.text(woocommerce_admin_meta_boxes_variations.i18n_variation_count_plural.replace("%qty%",d)),d},update_single_quantity:function(b,c){if(1===c){var d=a(".variations-pagenav");e.update_variations_count(c),d.is(":hidden")&&(a("option, optgroup",".variation_actions").show(),a(".variation_actions").val("add_variation"),a("#variable_product_options").find(".toolbar").show(),d.show(),a(".pagination-links",d).hide())}},set_paginav:function(b){var c=a("#variable_product_options").find(".woocommerce_variations"),d=e.update_variations_count(b),f=a("#variable_product_options").find(".toolbar"),g=a(".variation_actions"),h=a(".variations-pagenav"),i=a(".pagination-links",h),j=Math.ceil(d/woocommerce_admin_meta_boxes_variations.variations_per_page),k="";c.attr("data-total_pages",j),a(".total-pages",h).text(j);for(var l=1;j>=l;l++)k+='<option value="'+l+'">'+l+"</option>";a(".page-selector",h).empty().html(k),0===d?(f.not(".toolbar-top, .toolbar-buttons").hide(),h.hide(),a("option, optgroup",g).hide(),a(".variation_actions").val("add_variation"),a('option[data-global="true"]',g).show()):(f.show(),h.show(),a("option, optgroup",g).show(),a(".variation_actions").val("add_variation"),1===j?i.hide():i.show())},check_is_enabled:function(b){return!a(b).hasClass("disabled")},change_classes:function(b,c){var d=a(".variations-pagenav .first-page"),e=a(".variations-pagenav .prev-page"),f=a(".variations-pagenav .next-page"),g=a(".variations-pagenav .last-page");1===b?(d.addClass("disabled"),e.addClass("disabled")):(d.removeClass("disabled"),e.removeClass("disabled")),c===b?(f.addClass("disabled"),g.addClass("disabled")):(f.removeClass("disabled"),g.removeClass("disabled"))},set_page:function(b){a(".variations-pagenav .page-selector").val(b).first().change()},go_to_page:function(a,b){a=a||1,b=b||0,e.set_paginav(b),e.set_page(a)},page_selector:function(){var b=parseInt(a(this).val(),10),c=a("#variable_product_options").find(".woocommerce_variations");a(".variations-pagenav .page-selector").val(b),d.check_for_changes(),e.change_classes(b,parseInt(c.attr("data-total_pages"),10)),d.load_variations(b)},first_page:function(){return e.check_is_enabled(this)&&e.set_page(1),!1},prev_page:function(){if(e.check_is_enabled(this)){var b=a("#variable_product_options").find(".woocommerce_variations"),c=parseInt(b.attr("data-page"),10)-1,d=c>0?c:1;e.set_page(d)}return!1},next_page:function(){if(e.check_is_enabled(this)){var b=a("#variable_product_options").find(".woocommerce_variations"),c=parseInt(b.attr("data-total_pages"),10),d=parseInt(b.attr("data-page"),10)+1,f=c>=d?d:c;e.set_page(f)}return!1},last_page:function(){if(e.check_is_enabled(this)){var b=a("#variable_product_options").find(".woocommerce_variations").attr("data-total_pages");e.set_page(b)}return!1}};b.init(),c.init(),d.init(),e.init()});
\ No newline at end of file
+jQuery(function(a){var e={init:function(){a("#variable_product_options").on("change","input.variable_is_downloadable",this.variable_is_downloadable).on("change","input.variable_is_virtual",this.variable_is_virtual).on("change","input.variable_manage_stock",this.variable_manage_stock).on("click","button.notice-dismiss",this.notice_dismiss).on("click","h3 .sort",this.set_menu_order).on("reload",this.reload),a("input.variable_is_downloadable, input.variable_is_virtual, input.variable_manage_stock").change(),a("#woocommerce-product-data").on("woocommerce_variations_loaded",this.variations_loaded),a(document.body).on("woocommerce_variations_added",this.variation_added)},reload:function(){o.load_variations(1)},variable_is_downloadable:function(){a(this).closest(".woocommerce_variation").find(".show_if_variation_downloadable").hide(),a(this).is(":checked")&&a(this).closest(".woocommerce_variation").find(".show_if_variation_downloadable").show()},variable_is_virtual:function(){a(this).closest(".woocommerce_variation").find(".hide_if_variation_virtual").show(),a(this).is(":checked")&&a(this).closest(".woocommerce_variation").find(".hide_if_variation_virtual").hide()},variable_manage_stock:function(){a(this).closest(".woocommerce_variation").find(".show_if_variation_manage_stock").hide(),a(this).is(":checked")&&a(this).closest(".woocommerce_variation").find(".show_if_variation_manage_stock").show()},notice_dismiss:function(){a(this).closest("div.notice").remove()},variations_loaded:function(i,o){o=o||!1;var t=a("#woocommerce-product-data");o||(a("input.variable_is_downloadable, input.variable_is_virtual, input.variable_manage_stock",t).change(),a(".woocommerce_variation",t).each(function(e,i){var o=a(i),t=a(".sale_price_dates_from",o).val(),n=a(".sale_price_dates_to",o).val();(""!==t||""!==n)&&a("a.sale_schedule",o).click()}),a(".woocommerce_variations .variation-needs-update",t).removeClass("variation-needs-update"),a("button.cancel-variation-changes, button.save-variation-changes",t).attr("disabled","disabled")),a("#tiptip_holder").removeAttr("style"),a("#tiptip_arrow").removeAttr("style"),a(".woocommerce_variations .tips, .woocommerce_variations .help_tip, .woocommerce_variations .woocommerce-help-tip",t).tipTip({attribute:"data-tip",fadeIn:50,fadeOut:50,delay:200}),a(".sale_price_dates_fields",t).each(function(){var e=a(this).find("input").datepicker({defaultDate:"",dateFormat:"yy-mm-dd",numberOfMonths:1,showButtonPanel:!0,onSelect:function(i){var o=a(this).is(".sale_price_dates_from")?"minDate":"maxDate",t=a(this).data("datepicker"),n=a.datepicker.parseDate(t.settings.dateFormat||a.datepicker._defaults.dateFormat,i,t.settings);e.not(this).datepicker("option",o,n),a(this).change()}})}),a(".woocommerce_variations",t).sortable({items:".woocommerce_variation",cursor:"move",axis:"y",handle:".sort",scrollSensitivity:40,forcePlaceholderSize:!0,helper:"clone",opacity:.65,stop:function(){e.variation_row_indexes()}}),a(document.body).trigger("wc-enhanced-select-init")},variation_added:function(a,i){1===i&&e.variations_loaded(null,!0)},set_menu_order:function(e){e.preventDefault();var i=a(this).closest(".woocommerce_variation").find(".variation_menu_order"),t=window.prompt(woocommerce_admin_meta_boxes_variations.i18n_enter_menu_order,i.val());null!=t&&(i.val(parseInt(t,10)).change(),o.save_variations())},variation_row_indexes:function(){var e=a("#variable_product_options").find(".woocommerce_variations"),i=parseInt(e.attr("data-page"),10),o=parseInt((i-1)*woocommerce_admin_meta_boxes_variations.variations_per_page,10);a(".woocommerce_variations .woocommerce_variation").each(function(e,i){a(".variation_menu_order",i).val(parseInt(a(i).index(".woocommerce_variations .woocommerce_variation"),10)+1+o).change()})}},i={variable_image_frame:null,setting_variation_image_id:null,setting_variation_image:null,wp_media_post_id:wp.media.model.settings.post.id,init:function(){a("#variable_product_options").on("click",".upload_image_button",this.add_image),a("a.add_media").on("click",this.restore_wp_media_post_id)},add_image:function(e){var 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\ No newline at end of file